Isolated, Precision Half-Bridge Driver, 0.1 A Output ADuM1234 FEATURES GENERAL DESCRIPTION Isolated high-side and low-side outputs High side or low side relative to input: ±700 VPEAK High-side/low-side differential: 700 VPEAK 0.1 A peak output current CMOS input threshold levels High frequency operation: 5 MHz maximum High common-mode transient immunity: >75 kV/μs High temperature operation: 105°C Wide body, RoHS compliant, 16-lead SOIC UL1577 2500 V rms input-to-output withstand voltage The ADuM12341 is an isolated, half-bridge gate driver that employs the Analog Devices, Inc. iCoupler® technology to provide independent and isolated high-side and low-side outputs. Combining high speed CMOS and monolithic transformer technology, this isolation component provides outstanding performance characteristics superior to optocoupler-based solutions. By avoiding the use of LEDs and photodiodes, this iCoupler gate drive device is able to provide precision timing characteristics not possible with optocouplers. Furthermore, the reliability and performance stability problems associated with optocoupler LEDs are avoided. APPLICATIONS Isolated IGBT/MOSFET gate drives Plasma displays Industrial inverters Switching power supplies In comparison to gate drivers employing high voltage level translation methodologies, the ADuM1234 offers the benefit of true, galvanic isolation between the input and each output. Each output can be operated up to ±700 VPEAK relative to the input, thereby supporting low-side switching to negative voltages. The differential voltage between the high side and low side can be as high as 700 VPEAK. As a result, the ADuM1234 provides reliable control over the switching characteristics of IGBT/MOSFET configurations over a wide range of positive or negative switching voltages. VIA 1 ADuM1234 16 VDDA 15 VOA VDD1 3 14 GNDA GND1 4 13 NC DISABLE 5 12 NC NC 6 11 VDDB 10 VOB VIB 2 NC 7 ENCODE ENCODE VDD1 8 DECODE DECODE 9 GNDB 06920-001 FUNCTIONAL BLOCK DIAGRAM NC = NO CONNECT Figure 1. 1 Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329. Other patents pending. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved. ADuM1234 TABLE OF CONTENTS Features .............................................................................................. 1 Recommended Operating Conditions .......................................4 Applications ....................................................................................... 1 Absolute Maximum Ratings ............................................................5 General Description ......................................................................... 1 ESD Caution...................................................................................5 Functional Block Diagram .............................................................. 1 Pin Configuration and Function Descriptions..............................6 Revision History ............................................................................... 2 Typical Perfomance Characteristics ................................................7 Specifications..................................................................................... 3 Application Notes ..............................................................................8 Electrical Characteristics ............................................................. 3 Common-Mode Transient Immunity ........................................8 Package Characteristics ............................................................... 4 Insulation Lifetime ........................................................................9 Regulatory Information ............................................................... 4 Outline Dimensions ....................................................................... 10 Insulation and Safety-Related Specifications ............................ 4 Ordering Guide .......................................................................... 10 REVISION HISTORY 7/07—Revision 0: Initial Version Rev. 0 | Page 2 of 12 ADuM1234 SPECIFICATIONS ELECTRICAL CHARACTERISTICS 4.5 V ≤ VDD1 ≤ 5.5 V, 12 V ≤ VDDA ≤ 18 V, 12 V ≤ VDDB ≤ 18 V. All minimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = 5 V, VDDA = 15 V, VDDB = 15 V. All voltages are relative to their respective grounds. Table 1. Parameter DC SPECIFICATIONS Input Supply Current, Quiescent Output Supply Current A or Output Supply Current B, Quiescent Input Supply Current, 10 Mbps Output Supply Current A or Output Supply Current B, 10 Mbps Input Currents Logic High Input Threshold Logic Low Input Threshold Logic High Output Voltages Logic Low Output Voltages Output Short-Circuit Pulsed Current 1 SWITCHING SPECIFICATIONS Minimum Pulse Width 2 Maximum Switching Frequency 3 Propagation Delay 4 Change vs. Temperature Pulse Width Distortion, |tPLH − tPHL| Channel-to-Channel Matching, Rising or Falling Edges 5 Channel-to-Channel Matching, Rising vs. Falling Edges 6 Part-to-Part Matching, Rising or Falling Edges 7 Part-to-Part Matching, Rising vs. Falling Edges 8 Output Rise/Fall Time (10% to 90%) Symbol Min IDDI(Q) IDDA(Q), IDDB(Q) IDDI(10) IDDA(10), IDDB(10) IIA, IIB, IDISABLE VIH VIL VOAH,VOBH −10 Typ Max Unit 3.0 0.3 4.2 1.2 mA mA 6.0 16 9.0 22 mA mA CL = 200 pF +0.01 +10 μA 0 V ≤ VIA, VIB, VDISABLE ≤ VDD1 0.3 × VDD1 V V V IOA, IOB = −1 mA 0.7 × VDD1 VDDA − 0.1, VDDB − 0.1 VOAL,VOBL IOA(SC), IOB(SC) VDDA, VDDB tPHL, tPLH 0.1 V mA IOA, IOB = +1 mA 100 8 5 ns Mbps ns ps/°C ns ns CL = 200 pF CL = 200 pF CL = 200 pF CL = 200 pF CL = 200 pF CL = 200 pF 13 ns CL = 200 pF 55 63 ns ns CL = 200 pF, Input tR = 3 ns CL = 200 pF, Input tR = 3 ns 25 ns CL = 200 pF 100 PW 10 97 PWD tR/tF 1 124 100 Test Conditions 160 Short-circuit duration less than 1 second. The minimum pulse width is the shortest pulse width at which the specified timing parameters are guaranteed. The maximum switching frequency is the maximum signal frequency at which the specified timing parameters are guaranteed. 4 tPHL propagation delay is measured from the 50% level of the falling edge of the VIx signal to the 50% level of the falling edge of the VOx signal. tPLH propagation delay is measured from the 50% level of the rising edge of the VIx signal to the 50% level of the rising edge of the VOx signal. 5 Channel-to-channel matching, rising or falling edges, is the magnitude of the propagation delay difference between two channels of the same part when the inputs are either both rising or falling edges. The supply voltages and the loads on each channel are equal. 6 Channel-to-channel matching, rising vs. falling edges, is the magnitude of the propagation delay difference between two channels of the same part when one input is a rising edge and the other input is a falling edge. The supply voltages and loads on each channel are equal. 7 Part-to-part matching, rising or falling edges, is the magnitude of the propagation delay difference between the same channels of two different parts when the inputs are either both rising or falling edges. The supply voltages, temperatures, and loads of each part are equal. 8 Part-to-part matching, rising vs. falling edges, is the magnitude of the propagation delay difference between the same channels of two different parts when one input is a rising edge and the other input is a falling edge. The supply voltages, temperatures, and loads of each part are equal. 2 3 Rev. 0 | Page 3 of 12 ADuM1234 PACKAGE CHARACTERISTICS Table 2. Parameter Resistance (Input-to-Output) 1 Capacitance (Input-to-Output)1 Input Capacitance IC Junction-to-Ambient Thermal Resistance 1 Symbol RI-O CI-O CI θJA Min Typ 1012 2.0 4.0 76 Max Unit Ω pF pF °C/W Test Conditions f = 1 MHz The device is considered a 2-terminal device: Pin 1 through Pin 8 are shorted together, and Pin 9 through Pin 16 are shorted together. REGULATORY INFORMATION The ADuM1234 has been approved by the organization listed in Table 3. Refer to Table 7 and the Insulation Lifetime section for details regarding recommended maximum working voltages for specific cross-isolation waveforms and insulation levels. Table 3. UL Recognized under the 1577 component recognition program 1 Single/basic insulation, 2500 V rms isolation voltage 1 In accordance with UL1577, each ADuM1234 is proof tested by applying an insulation test voltage ≥ 3000 V rms for 1 second (current leakage detection limit = 5 μA). INSULATION AND SAFETY-RELATED SPECIFICATIONS Table 4. Parameter Rated Dielectric Insulation Voltage Minimum External Air Gap (Clearance) Symbol L(I01) Value 2500 7.7 min Unit V rms mm Minimum External Tracking (Creepage) L(I02) 8.1 min mm Minimum Internal Gap (Internal Clearance) Tracking Resistance (Comparative Tracking Index) Isolation Group CTI 0.017 min >175 IIIa mm V Conditions 1 minute duration Measured from input terminals to output terminals, shortest distance through air Measured from input terminals to output terminals, shortest distance path along body Insulation distance through insulation DIN IEC 112/VDE 0303 Part 1 Material Group (DIN VDE 0110, 1/89, Table 1) RECOMMENDED OPERATING CONDITIONS Table 5. Parameter Operating Temperature Input Supply Voltage 1 Output Supply Voltages1 Input Signal Rise and Fall Times Common-Mode Transient Immunity, Input-to-Output 2 Common-Mode Transient Immunity, Between Outputs2 Transient Immunity, Supply Voltages2 1 2 Symbol TA VDD1 VDDA, VDDB Min −40 4.5 12 −75 −75 −75 All voltages are relative to their respective ground. See the Common-Mode Transient Immunity section for additional data. Rev. 0 | Page 4 of 12 Max +105 5.5 18 100 +75 +75 +75 Unit °C V ns kV/μs kV/μs kV/μs ADuM1234 ABSOLUTE MAXIMUM RATINGS Ambient temperature = 25°C, unless otherwise noted. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 6. Parameter Storage Temperature (TST) Ambient Operating Temperature (TA) Input Supply Voltage (VDD1) 1 Output Supply Voltage1 (VDDA, VDDB) Input Voltage1 (VIA, VIB) Output Voltage1 VOA VOB Input-to-Output Voltage 2 Output Differential Voltage 3 Output DC Current (IOA, IOB) Common-Mode Transients 4 Rating −55°C to +150°C −40°C to +105°C −0.5 V to +7.0 V −0.5 V to +27 V −0.5 V to VDDI + 0.5 V −0.5 V to VDDA + 0.5 V −0.5 V to VDDB + 0.5 V −700 VPEAK to +700 VPEAK 700 VPEAK −20 mA to +20 mA −100 kV/μs to +100 kV/μs ESD CAUTION 1 All voltages are relative to their respective ground. Input-to-output voltage is defined as GNDA − GND1 or GNDB − GND1. Output differential voltage is defined as GNDA − GNDB. 4 Refers to common-mode transients across any insulation barrier. Common-mode transients exceeding the absolute maximum ratings may cause latch-up or permanent damage. 2 3 Table 7. Maximum Continuous Working Voltage1 Parameter AC Voltage, Bipolar Waveform AC Voltage, Unipolar Waveform Basic Insulation DC Voltage Basic Insulation 1 Max 565 Constraint 50-year minimum lifetime 700 Unit V peak V peak V peak 700 V peak Analog Devices recommended maximum working voltage Analog Devices recommended maximum working voltage Refers to continuous voltage magnitude imposed across the isolation barrier. See the Insulation Lifetime section for more details. Rev. 0 | Page 5 of 12 ADuM1234 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS VIA 1 16 VDDA VIB 2 15 VOA VDD1 3 14 GNDA DISABLE 5 ADuM1234 NC TOP VIEW (Not to Scale) 12 NC 13 NC 6 11 VDDB NC 7 10 VOB VDD1 8 9 GNDB NC = NO CONNECT 06920-002 GND1 4 Figure 2. Pin Configuration Table 8. ADuM1234 Pin Function Descriptions Pin No. 1 2 3 1 , 81 4 5 6, 7, 12 2 , 132 9 10 11 14 15 16 1 2 Mnemonic VIA VIB VDD1 GND1 DISABLE NC GNDB VOB VDDB GNDA VOA VDDA Description Logic Input A. Logic Input B. Input Supply Voltage, 4.5 V to 5.5 V. Ground Reference for Input Logic Signals. Input Disable. Disables the isolator inputs and refresh circuits. Outputs take on default low state. No Connect. Ground Reference for Output B. Output B. Output B Supply Voltage, 12 V to 18 V. Ground Reference for Output A. Output A. Output A Supply Voltage, 12 V to 18 V. Pin 3 and Pin 8 are internally connected. Connecting both pins to VDD1 is recommended. Pin 12 and Pin 13 are floating and should be left unconnected. Table 9. Truth Table (Positive Logic) VIA/VIB Input H L X X VDD1 State Powered Powered Unpowered Powered DISABLE L L X H VOA/VOB Output H L L L Notes Output returns to input state within 1 μs of VDD1 power restoration. Rev. 0 | Page 6 of 12 ADuM1234 TYPICAL PERFOMANCE CHARACTERISTICS 7 115 114 PROPAGATION DELAY (ns) 5 4 3 2 CH. B, FALLING EDGE 112 CH. A, FALLING EDGE 111 CH. A, RISING EDGE 110 1 CH. B, RISING EDGE 0 2 4 6 DATA RATE (Mbps) 8 10 109 12 06920-006 0 113 Figure 3. Typical Input Supply Current Variation with Data Rate 15 OUTPUT SUPPLY VOLTAGE (V) 18 06920-009 INPUT CURRENT (mA) 6 Figure 6. Typical Propagation Delay Variation with Output Supply Voltage (Input Supply Voltage = 5.0 V) 18 115 16 114 12 10 8 6 4 113 112 CH. A, RISING EDGE 110 2 4 6 DATA RATE (Mbps) 8 10 109 4.5 06920-007 0 Figure 4. Typical Output Supply Current Variation with Data Rate 110 105 0 20 40 60 TEMPERATURE (°C) 80 100 120 06920-008 PROPAGATION DELAY (ns) 115 –20 CH. B, RISING EDGE 5.0 INPUT SUPPLY VOLTAGE (V) 5.5 Figure 7. Typical Propagation Delay Variation with Input Supply Voltage (Output Supply Voltage = 15.0 V) 120 100 –40 CH. A, FALLING EDGE 111 2 0 CH. B, FALLING EDGE 06920-010 PROPAGATION DELAY (ns) OUTPUT CURRENT (mA) 14 Figure 5. Typical Propagation Delay Variation with Temperature Rev. 0 | Page 7 of 12 ADuM1234 APPLICATION NOTES 300 COMMON-MODE TRANSIENT IMMUNITY dVCM/dt = ΔV/Δt Figure 8 characterizes the ability of the ADuM1234 to operate correctly in the presence of linear transients. The data is based on design simulation and is the maximum linear transient magnitude that the ADuM1234 can tolerate without an operational error. This data shows a higher level of robustness than what is listed in Table 5 because the transient immunity values obtained in Table 5 use measured data and apply allowances for measurement error and margin. 400 BEST-CASE PROCESS VARIATION 300 250 200 100 50 0 WORST-CASE PROCESS VARIATION 0 250 1500 1750 2000 250 200 BEST-CASE PROCESS VARIATION 150 100 50 0 WORST-CASE PROCESS VARIATION 50 WORST-CASE PROCESS VARIATION 0 250 500 750 1000 1250 FREQUENCY (MHz) 1500 1750 2000 Figure 10. Transient Immunity (Sinusoidal Transients), 100°C Ambient Temperature –20 0 20 40 TEMPERATURE (°C) 60 80 100 06920-011 0 –40 750 1000 1250 FREQUENCY (MHz) Figure 9. Transient Immunity (Sinusoidal Transients), 27°C Ambient Temperature 150 100 500 15V VDD1 5V GND1 Figure 8. Transient Immunity (Linear Transients) vs. Temperature 15V VDDA AND VDDB The sinusoidal component (at a given frequency) is given by 15V ΔV Δt VDDA AND VDDB VCM, sinusoidal = V0sin(2πft) GNDA AND GNDB ΔV Δt 5V 15V 06920-003 VDD1 where: GNDA AND GND B GND1 V0 is the magnitude of the sinusoidal. f is the frequency of the sinusoidal. Figure 11. Common-Mode Transient Immunity Waveforms, Input to Output The transient magnitude of the sinusoidal component is given by 15V VDDA /VDDB dVCM/dt = 2πf V0 VDDB /VDDA Figure 9 and Figure 10 characterize the ability of the ADuM1234 to operate correctly in the presence of sinusoidal transients. The data is based on design simulation and is the maximum sinusoidal transient magnitude (2πf V0) that the ADuM1234 can tolerate without an operational error. Values for immunity against sinusoidal transients are not included in Table 5 because measurements to obtain such values have not been possible. 15V GNDA/GNDB 15V VDDA /VDDB GNDA/GNDB VDDB /VDDA ΔV Δt 15V GNDB/GNDA ΔV 15V Δt GNDA/GNDB Rev. 0 | Page 8 of 12 Figure 12. Common-Mode Transient Immunity Waveforms, Between Outputs 15V 06920-004 TRANSIENT IMMUNITY (kV/µs) 350 150 06920-012 The transient of the linear component is given by BEST-CASE PROCESS VARIATION 200 06920-013 where ΔV/Δt is the slope of the transient shown in Figure 11 and Figure 12. TRANSIENT IMMUNITY (kV/µs) VCM, linear = (ΔV/Δt)t 250 TRANSIENT IMMUNITY (kV/µs) In general, common-mode transients consist of linear and sinusoidal components. The linear component of a commonmode transient is given by ADuM1234 VDDA /VDDB determines the maximum working voltage recommended by Analog Devices. GNDA/GNDB Figure 13. Transient Immunity Waveforms, Output Supplies INSULATION LIFETIME All insulation structures eventually break down when subjected to voltage stress over a sufficiently long period. The rate of insulation degradation depends on the characteristics of the voltage waveform applied across the insulation. In addition to the testing performed by the regulatory agencies, Analog Devices conducts an extensive set of evaluations to determine the lifetime of the insulation structure within the ADuM1234. Analog Devices performs accelerated life testing using voltage levels higher than the rated continuous working voltage. Acceleration factors for several operating conditions are determined. These factors allow calculation of the time to failure at the actual working voltage. Table 7 summarizes the peak voltages for 50 years of service life for a bipolar ac operating condition and the maximum Analog Devices recommended working voltages. In many cases, the approved working voltage is higher than the 50-year service life voltage. Operation at these high working voltages can lead to shortened insulation life in some cases. The insulation lifetime of the ADuM1234 depends on the voltage waveform type imposed across the isolation barrier. The iCoupler insulation structure degrades at different rates depending on whether the waveform is bipolar ac, unipolar ac, or dc. Figure 14, Figure 15, and Figure 16 illustrate these different isolation voltage waveforms. Bipolar ac voltage is the most stringent environment. The goal of a 50-year operating lifetime under the ac bipolar condition Rev. 0 | Page 9 of 12 RATED PEAK VOLTAGE 06920-014 06920-005 GNDA/GNDB In the case of unipolar ac or dc voltage, the stress on the insulation is significantly lower. This allows operation at higher working voltages while still achieving a 50-year service life. The working voltages listed in Table 7 can be applied while maintaining the 50-year minimum lifetime provided the voltage conforms to either the unipolar ac or dc voltage cases. Any cross insulation voltage waveform that does not conform to Figure 15 or Figure 16 should be treated as a bipolar ac waveform and its peak voltage should be limited to the 50-year lifetime voltage value listed in Table 7. Note that the voltage presented in Figure 15 is shown as sinusoidal for illustration purposes only. It is meant to represent any voltage waveform varying between 0 V and some limiting value. The limiting value can be positive or negative, but the voltage cannot cross 0 V. 0V Figure 14. Bipolar AC Waveform RATED PEAK VOLTAGE 06920-015 Δt VDDA /VDDB 0V Figure 15. Unipolar AC Waveform RATED PEAK VOLTAGE 06920-016 ΔVDD 0V Figure 16. DC Waveform ADuM1234 OUTLINE DIMENSIONS 10.50 (0.4134) 10.10 (0.3976) 9 16 7.60 (0.2992) 7.40 (0.2913) 8 1.27 (0.0500) BSC 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 0.51 (0.0201) 0.31 (0.0122) 10.65 (0.4193) 10.00 (0.3937) 0.75 (0.0295) 0.25 (0.0098) 2.65 (0.1043) 2.35 (0.0925) SEATING PLANE 45° 8° 0° 1.27 (0.0500) 0.40 (0.0157) 0.33 (0.0130) 0.20 (0.0079) COMPLIANT TO JEDEC STANDARDS MS-013- AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. 032707-B 1 Figure 17. 16-Lead Standard Small Outline Package [SOIC_W] Wide Body (RW-16) Dimensions shown in millimeters and (inches) ORDERING GUIDE Model ADuM1234BRWZ 1 ADuM1234BRWZ-RL1, 2 1 2 No. of Channels 2 2 Output Peak Current (A) 0.1 0.1 Output Voltage (V) 15 15 Temperature Range −40°C to +105°C −40°C to +105°C Z = RoHS Compliant Part. 13-inch tape and reel option (1,000 units). Rev. 0 | Page 10 of 12 Package Description 16-Lead SOIC_W 16-Lead SOIC_W Package Option RW-16 RW-16 ADuM1234 NOTES Rev. 0 | Page 11 of 12 ADuM1234 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06920-0-7/07(0) Rev. 0 | Page 12 of 12